MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in an insert for high-density connectivity. With an operating temperature range of -65 °C to 200 °C, they are suitable for a variety of applications. These connectors come in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use reliable M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering multiple plating options, such as cadmium and nickel, these connectors ensure durability and corrosion resistance. Ideal for military and industrial use, they meet MIL-DTL-38999 II specifications for performance and reliability in demanding conditions.